Subtract 80/28 from 30/27, Solve 1 3/27

Subtract 80/28 from 30/27

1^st number: 1 3/27, 2^nd number: 2 24/28

30/27 - 80/28 is -110/63.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 28 is 756

Next, find the equivalent fraction of both fractional numbers with denominator 756
For the 1st fraction, since 27 × 28 = 756,
30/27 = 30 × 28/27 × 28 = 840/756
Likewise, for the 2nd fraction, since 28 × 27 = 756,
80/28 = 80 × 27/28 × 27 = 2160/756
Subtract the two like fractions:
840/756 - 2160/756 = 840 - 2160/756 = -1320/756
After reducing the fraction, the answer is -110/63

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